Keyboard instrument



FIG. 1 is a top view of a keyboard instrument showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a front, right and top perspective view thereof.

The broken lines shown in the figures form no part of the claimed design. 

CLAIM The ornamental design for a keyboard instrument, as shown and described. 